Edison invented the incandescent light bulb in 1879 and applied for an electric light patent in 1880.
Edison was a famous American inventor and entrepreneur. He had more than 2,000 inventions and more than 1,000 patents in his life. His inventions of electric lights, phonographs, movie cameras, and power systems had a great impact on the world. Influence.
Contrary to people's common understanding, Edison was not the original inventor of the electric light. Edison improved the electric light. As early as 1801, a British chemist named Humphrey Davy used platinum wire to produce electricity in the laboratory; in 1810, he invented lighting using an arc generated between two energized carbon rods. The "electric candle" is the earliest prototype of electric light. After nearly 30 years of research, another British electrical engineer, Joseph Swan, made a vacuum light bulb with carbon filaments energized in December 1878. . The reports about Swann's light bulb inspired Edison a lot. In October 1879, Edison finally succeeded in making an incandescent light bulb using carbonized fiber as the filament, which he called a "carbonized cotton filament incandescent lamp". Subsequently, large-scale production was put into operation, and companies were established to set up corresponding infrastructure such as power stations and transmission grids. Electric lights were soon widely used in the United States. During this period, he continued to improve his technology, and finally decided to use tungsten filament as the filament, which he called "tungsten filament lamp” and has been used to this day. Edison also became recognized as the inventor of the electric light.